/* image swapping code */
function imagedata(url,title,height,width)
{this.url=url;					// url of image
 this.title=title;				// image title (alt text)
 this.height=height;			// image height
 this.width=width;				// image width
};

var currentimage=0;				// current displayed image
var imageresize=false;			// if the main image will resize (PhotoAlbum sets in ASPX code)

var imagearray=new Array();
/* imagedata object should be added to this array. see PhotoAlbum as an example */

// display image n (0-based) using image control ctl and optional label (title)
function DisplayImage(n)
{var ctl=document.getElementById('imgMainPhoto');
 var labelctl=document.getElementById('labelMainPhoto');
 if (ctl!=null)
 
     		
   // is image within imagedata range
   if (n>=0 && n<imagearray.length)
     {ctl.src=imagearray[n].url;
      ctl.title=imagearray[n].title;
      // optionally resize
      if (imageresize)
        {ctl.width=imagearray[n].width;
	     ctl.height=imagearray[n].height;
        }
      // optional label control  
      if (labelctl!=null)
        labelctl.innerHTML=imagearray[n].title;
	  currentimage=n;    
     };
 UpdateNavigation();
};

function UpdateNavigation()
{var pctl=document.getElementById('PrevDiv');
 var nctl=document.getElementById('NextDiv');
 if (pctl!=null) pctl.style.visibility=(imagearray.length>0)?'visible':'hidden';				
 if (nctl!=null) nctl.style.visibility=(imagearray.length>0)?'visible':'hidden'; 
}

function DisplayPreviousImage()
{
  if (currentimage==0)
    currentimage = imagearray.length;
	
  DisplayImage(--currentimage);
}

function DisplayNextImage()
{
  if (currentimage==imagearray.length-1)
    currentimage = -1;

   DisplayImage(++currentimage);
}

<!--
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}